haematococcus
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haematococcus
I took some of the red water from a dish on a friend's balcony because it would probably contain Haematococcus pluvialis. It did. This image shows 3 different stages, the swimming stage, divided cells and a vergatative cell.
The phase contrast on my microscope gives a blue background. In fact I prefer a more neutral tone.
Wim
These are great also Wim You need to educate me however, what is "red water?" I have never seen anything like these, interesting and a curiosity for me.
Site Admin.
Kenneth Ramos
Rutherfordton, North Carolina
Kens Microscopy
Reposts of my images within the galleries are welcome, as are constructive critical critiques.
Kenneth Ramos
Rutherfordton, North Carolina
Kens Microscopy
Reposts of my images within the galleries are welcome, as are constructive critical critiques.
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Thank you!
In dutch it is called 'bloedrode regenalg' : blood red rain alga. This species can be found in bird baths and it is easy to see when they bloom and turn the water red!
You can change the colour by using colour correction filters. A cheap way is to go to your photostore and ask a sample set of Lee filters. It is a bundle with small strips. I am not sure if they are sold in your country but these plastic filters are used for theater lighting and for photography. You can put them in front of your light source. Cut a circle and put them in teh filter holder.
If you can find such a sample bundle you can try all kinds of colours. there are very lightly coloured correction filters. If your background is a bit yellow red you need to correct that with a blue filter.
But you are limited by the actual colour your phase set provides.
Wim
In dutch it is called 'bloedrode regenalg' : blood red rain alga. This species can be found in bird baths and it is easy to see when they bloom and turn the water red!
You can change the colour by using colour correction filters. A cheap way is to go to your photostore and ask a sample set of Lee filters. It is a bundle with small strips. I am not sure if they are sold in your country but these plastic filters are used for theater lighting and for photography. You can put them in front of your light source. Cut a circle and put them in teh filter holder.
If you can find such a sample bundle you can try all kinds of colours. there are very lightly coloured correction filters. If your background is a bit yellow red you need to correct that with a blue filter.
But you are limited by the actual colour your phase set provides.
Wim
Re: haematococcus
Hi Wim, wonderful image! You can even see the threads that keep the cell 'hanging' in the casing, lorica or whatever you want to call it.Wim van Egmond wrote: The phase contrast on my microscope gives a blue background. In fact I prefer a more neutral tone.
Wim
I quite like the metallic blue background, it reminds me a bit of the water environment it is in. I like it better then the second option of the soot-brown colour. Anyway, with my coolpix it is no problem to white-balance it.
Rene.
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Just to explain where this colour is coming from: the phase ring in the objective changes the light optically, but ALSO the intensity. The phase rings used to be made with light-absorbing soot, which gives a muddy brown background colour, but some manufacturers make the rings by evaporating metals, giving a bluish background. So just a simple colour filter on the illuminator base can change the colour of the background.Wim van Egmond wrote:As the french ánd the dutch said very recently: NON!
The colour is fixed but in new phase contrast systems (Ron wrote about it) the ring in the systen is made of polarised material and with that I think the colour can be altered!
Wim
My favourite filter for phase is the use of a dark blue filter with a yellow ring (annulus) in the condenser, instead of the traditional black plate with 'white' ring. It gives a bit of life to otherwise an otherwise principally black&white (or brown and white) phase image.
Rene.
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- Posts: 440
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